similar to: constrained clustering

Hello, I would like to know if there is a function in an R library that allows to do cluster analysis under contiguity constraints ? Thank you very much for your answer ! Lise Bellanger -- Lise Bellanger, Universit? de Nantes D?partement de Math?matiques, Laboratoire Jean Leray UMR CNRS 6629 2, Rue de la Houssini?re BP 92208 - F-44322 Nantes Cedex 03 T?l. : (33|0) 2 51 12

Hi I have submitted a package (rioja) to CRAN. It checks OK for all R versions and OS's except r-release-macosx-ix86 where it fails when checking the examples. Specifically, it fails because R can't find the package vegan which is needed in a function. Here is the snippet from the check results: ### Begin snippet checking examples ... ERROR Running examples in 'rioja-Ex.R'

Hello, is it possible in R to calculate a Weighted averaging partial least squares regression? I'm not firm in statistics and didn't found anything about weighted averaging in combination with PLS in the help archives. Or is it possible to develop a workaround with the pls-package? thanks for help in advance Andreas Plank -- _____________________________________________ Dipl. Biol.

Hi, I've got a dataset with 7 variables for 8 different species. I'd like to test the null hypothesis of no difference among species for these variables. MANOVA seems like the appropriate test, but since I'm unsure of how well the data fit the assumptions of equal variance/covariance and multivariate normality, I want to use a permutation test. I've been through CRAN looking at

Hi, I'm trying to use adonis on a subset of data from a dataframe. The actual data is in columns 5:118, and the first four columns are various factors. There are 3 levels of the factor Habitat, and I want to examine differences among only two of them. So I started with: > CoastNear = subset(gel_data, Habitat != "I") The resulting data.frame has three levels for Habitat, but

Hi all, I would like to save the dendrogram of a hierarchical clustering. Let reshc the result of the fucntion hclust(). To save the dendrogram, I can use the function postscript: postscript(file="hc605.ps") plot(as.dendrogram(reshc),horiz=T,ylab="",main=" ") dev.off() Using the functions plot and as.dendrogram, it is possible to obtain an horizontal tree with

Hi, Is there any clustering package in R that can cluster with ordinal data? thanks! ____________________________________________________________________________________ Be a better friend, newshound, and [[alternative HTML version deleted]]

Dear all, How can I run a constrained correspondence analysis with the following data: 15 animals were measured repeatedly month-wise (over to 2 years) according to ther diet composition (8 food categories). our data.frame looks like this: food 1 2 ... 8 sex season year animal freq 12 8 ... 1 0 summer 2011 1 freq 0 7 ... 0 1 winter 2011 1 ... freq 0 7 ... 0 1 spring 2011 15 We

Hello, In the documentation for agnes in the package 'cluster', it says that NAs are allowed, and sure enough it works for a small example like : > m <- matrix(c( 1, 1, 1, 2, 1, NA, 1, 1, 1, 2, 2, 2), nrow = 3, byrow = TRUE) > agnes(m) Call: agnes(x = m) Agglomerative coefficient: 0.1614168 Order of objects: [1] 1 2 3 Height (summary): Min. 1st Qu. Median Mean 3rd

Hello, I am a relatively new user of R. I have written a basic function to calculate the Gower similarity function. I was motivated to do so partly as an excercise in learning R, and partly because the existing option (vegdist in the vegan package) does not accept missing values. I think I have succeeded - my function gives me the correct values. However, now that I'm starting to use it with

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Hi, I'm having some problems installing packages from the source files on Windows, using R CMD INSTALL pkg. I'm running WindowsXP, and I've followed the instructions as per the README.packages file from the R installation. I ran into a hitch, with the install failing following a "hhc: not found" warning. I figured out that this was related to the html help workshop.

Hello I am using Jari Oksanen's CCA routine from the Vegan package on some estuary data, following a technique applied in (Anderson, M.J. & Gribble, N.A., 1998, Partitioning the variation among spatial, temporal and environmental components in a multivariate data set, Australian Journal of Ecology 23, 158-167). Some steps in the process require that the dependent matrix be constrained by

Hi again, I've just uninstalled R2.01 and installed the new R2.10 on my WindowsXP machine. I then attempted to install the vegan package from source files, as I learned to do last week, with the help of some of you. I have updated my path variable to the new R directory (R/rw2010/bin instead of R/rw2001pat/bin), and I've still got the HTMLHelpWorkshop files installed, as well as Perl

Hi List, does anyone know of an implementation of spatially constrained clustering in R? This is where there is a vector of measurements for points on a plane and only neighbors can be clustered together. I have tried implementint in myself -- but if someone has alkready done it ! I have searched on the obvios terms "spatially constrained clustering" without any luck.

Hi, I'm having some trouble with a bit of combined C & R code. I'm trying to write a C function to handle the for loops in a function I'm working on to calculate a similarity matrix. Jari Oksanen has kindly added the necessary changes to the vegan package so that I can use the vegdist function, so this isn't absolutely necessary. However, I'm stubborn and want to know

Hi, I'm having some trouble with a bit of combined C & R code. I'm trying to write a C function to handle the for loops in a function I'm working on to calculate a similarity matrix. Jari Oksanen has kindly added the necessary changes to the vegan package so that I can use the vegdist function, so this isn't absolutely necessary. However, I'm stubborn and want to know

Hello I have 2 rows in a matrix and I want to calculate the Gower Distance between the 2 , how can I do it? I searched and found nothing that can help me, and my program doesn't know the gdist function and I couldn't find it on the R help site. Can anyone help me plz Thank u all [[alternative HTML version deleted]]

Hi, I've just about got myself transferred from windowsXP to Linux (Mepis 3.3.1-1). I've got R 2.1.1, emacs, and ess running from the debian repositories. Of course, there is a hitch. I have a bit of C code in one of my personal functions. I have, apparently without problem, been able to compile it using R CMD SHLIB, but when I try to dyn.load it I get the following error: >

Hi folks, I tried for the first time hclust. Unfortunately, with missing data in my data file, it doesn't seem to work. I found no information about how to consider missing data. Omission of all missings is not really an option as I would loose to many cases. Thanks in advance Holger -- View this message in context: